Burnham: Measures of Proper Motion Stars 
Oxford (Z 26°) 68464 (n.l) 
R. A. 20 h 38 m 44?97 Decl. + 26° 27' 22"6 
Place for 1900 from plate taken 1904.76 of the Oxford 
Astrographic Catalogue. The photographic positions indicate 
a proper motion of : 
o"307 in 2 o6?5 
A and B (10.7.. .11.6) 
1910.452 123^85 61"73 
•455 123-65 _ 61.53 
1910.45 123.75 61.63 
Oxford (Z 26°) 67901 (6.6) 
R. A. 20 h 39 m G67 Decl. 25 0 27' 53^3 
This is the 7.5 m star, DM ( (25 0 ) 4347. The place for 1900 is 
from the Oxford Astrographic Catalogue, plate taken 1904.76. 
From the photographic positions the proper motion is given: 
o"i55 hi 358 ?o 
A and B (7.5.. .15.0) 
1910.452 228 °1 
i 6?94 
A and C (13.0) 
1910.436 2o8?47 
39-77 
.452 208.10 
39-70 
1910.44 -208.28 
39-73 
A and DM (25 0 ) 4350 (8 
• 9 ) 
1910.44 
A R. A. + 27? 8 A Decl. - 
- 86 "2 
1875 
27.9 
88.1 
A and DM (25 0 ) 4343 (9 
-i) 
1910.44 
AR. A. — 31! 4 A Decl. + i23!'< 
1875 
31-4 
124.. 
Cephei 
6 (Hev.) (4.7.. 
■ 9 - 5 ) 
R. A. 2o h 
42 m 22 s Decl. + 
57 ° 9 ' 
1908.331 
i62?40 
68"6o 
• 383 
162.90 
68.84 
•403 
162.63 
68.20 
1908.37 
162.64 
68.55 
The small star is DM (57°) 2241. The only other measure is : 
1894.00 i 64?87 71 "77 2n Eng 
These positions give for the proper motion of the large star: 
o"225 in i69?8 
Both stars in A. G. With the measures and the meridian 
positions in 1875, the proper motion becomes: 
0^267 in i67?5 
The motion in R. A. is very small and uncertain. The other 
values are: 
Auwers 
0^251 
in 
I 97°6 
Groombridge 
0.256 
in 
198.8 
Boss 
0.241 
in 
196.2 
Porter 
0.268 
in 
201.3 
Oxford (Z 26°) 67632 (11.3) 
R. A. 20” 43 m 30?02 Decl. + 24° 56' 44^3 
From the Oxford Astrographic Catalogue; place for 1900 
from plate taken 1904.76. The proper motion is given: 
o"i55 in 190?! 
A and B (10.7...10.9) 
1910.512 
.529 
38!68 
40.13 
47-09 
47.04 
1910.52 
39-40 
47.06 
1910.512 
.529 
A and C (11.2) 
100!25 
100.93 
I03"20 
103.28 
1910.52 
100.59 
103.24 
1910.5T2 
•529 
A and D (10.5) 
25 i °55 
251-50 
155*37 
155-74 
I9IO.52 
251-52 
155-55 
All of the comparison stars should show on the plates. 
56 Cygni (5. 2 ... II.2) 
R. A. 20 h 45 m 49 s Decl. + 43 0 39' 
1907.312 
45 ° 67 
75"39 
.329 
45-77 
75-45 
• 348 
45-58 
75-54 
I 907-33 
45-67 
75-46 
We have the following 1 
prior measures: 
1852.63 45° x 5 
86" 03 
in 
02 
1883.87 45-42 
80.71 
in 
H 2 
1907-33 45-67 
75-46 
3 n 
P 
From which the proper motion of the 
large star 
is: 
Measures 
0"194 in 
4 i °5 
Auwers 
0.171 in 
48.8 
Boss 
0.178 in 
44-0 
Porter 
0.180 in 
45-9 
DM (32°) 3980 (6.0. 
..10.0) 
R. A. 20" 49 m 
2 s Decl. + 32 0 59' 
1909.438 
58?33 
i 87"47 
• 458 
58.30 
187.36 
• 493 
58.72 
187.59 
1909.46 
58.45 
187.47 
Apparently unchanged. 
1880.30 58?05 
187 "07 
2n 
It is evident from this, and from the meridian positions, that 
the proper motion, if any, is small. 
Boss 0^042 in 349?6 
66 
